What makes a high-mass star's core collapse?
A) Energy from its outer layers compresses its core.
B) The only thing that can make a star's core collapse is a collision with another star.
C) Massive stars develop iron cores that cannot fuse anymore, so the core collapses under gravity.
D) Massive stars' cores don't collapse. They expand and become planetary nebulas.

Question

Quizplus · Accepted Answer

Massive stars develop iron cores that cannot undergo fusion, leading to a lack of outward pressure to counteract gravity, causing the core to collapse.

What Makes a High-Mass Star's Core Collapse